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230155142 = 2716439653
BaseRepresentation
bin11011011011111…
…10001110000110
3121001002002111112
431231332032012
5432404431032
634501005022
75463200150
oct1555761606
9531062445
10230155142
11108a09a68
12650b3772
13388b4a99
14227d1ad0
15153141b2
hexdb7e386

230155142 has 8 divisors (see below), whose sum is σ = 394551696. Its totient is φ = 98637912.

The previous prime is 230155103. The next prime is 230155169. The reversal of 230155142 is 241551032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8219813 + ... + 8219840.

It is an arithmetic number, because the mean of its divisors is an integer number (49318962).

Almost surely, 2230155142 is an apocalyptic number.

230155142 is a deficient number, since it is larger than the sum of its proper divisors (164396554).

230155142 is a wasteful number, since it uses less digits than its factorization.

230155142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439662.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 230155142 is about 15170.8649061285. The cubic root of 230155142 is about 612.8302964880.

The spelling of 230155142 in words is "two hundred thirty million, one hundred fifty-five thousand, one hundred forty-two".

Divisors: 1 2 7 14 16439653 32879306 115077571 230155142